cliff, to have a sunset when it comes to our fiscal situation is that really what's going on here? lawmakers are on vacation, so will anything get done in time? >>> lots of people on vacation, dana. a winter storm may be headed your way. for all of the people traveling, 93 million americans on trains, planes, and automobiles. what it means for your holiday travel plans. good morning, welcome to "starting point." chilly in new york city. 7:00 in the morning. i'm alina cho in new york. >> and i'm dana bash in washington. monday, december 24th. christmas eve. "starting point" begins right now. >> and our "starting point," a u.s. contractor in kabul gunned down and killed this morning by a woman wearing an afghan police uniform. it happened inside kabul's police headquarters. the latest in a string of suspected green on blue attacks that are hitting morale and eroding trust in allies there. our pentagon correspond respondent barbara starr up early for us working her sources. joins us live from washington with more. >> good morning, alina. in the last few minutes, our nato sources are c